Nanosaur

Cheat mode:
Enter one of the following codes during game play on level 1 to activate the corresponding cheat function.

All items and health:
Jump on one of the Pteranodons to fly high enough to a point where the ground disappears. At this time 100% health, all weapons, 999 items, a full jet pack, and shield will become available. Use the jet pack to return to ground level to avoid landing in lava.

Jet pack refuel:
Double jump off the face of a mountain with the jet pack. If done correctly, a shield will appear while the jet pack is refilled.

Shield:
When on top of a mountain or hill jump on top of a T Rex. When you are on top of it, double jump to get a shield.